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  • Web.Config is Cached

    - by SGWellens
    There was a question from a student over on the Asp.Net forums about improving site performance. The concern was that every time an app setting was read from the Web.Config file, the disk would be accessed. With many app settings and many users, it was believed performance would suffer. Their intent was to create a class to hold all the settings, instantiate it and fill it from the Web.Config file on startup. Then, all the settings would be in RAM. I knew this was not correct and didn't want to just say so without any corroboration, so I did some searching. Surprisingly, this is a common misconception. I found other code postings that cached the app settings from Web.Config. Many people even thanked the posters for the code. In a later post, the student said their text book recommended caching the Web.Config file. OK, here's the deal. The Web.Config file is already cached. You do not need to re-cache it. From this article http://msdn.microsoft.com/en-us/library/aa478432.aspx It is important to realize that the entire <appSettings> section is read, parsed, and cached the first time we retrieve a setting value. From that point forward, all requests for setting values come from an in-memory cache, so access is quite fast and doesn't incur any subsequent overhead for accessing the file or parsing the XML. The reason the misconception is prevalent may be because it's hard to search for Web.Config and cache without getting a lot of hits on how to setup caching in the Web.Config file. So here's a string for search engines to index on: "Is the Web.Config file Cached?" A follow up question was, are the connection strings cached? Yes. http://msdn.microsoft.com/en-us/library/ms178683.aspx At run time, ASP.NET uses the Web.Config files to hierarchically compute a unique collection of configuration settings for each incoming URL request. These settings are calculated only once and then cached on the server. And, as everyone should know, if you modify the Web.Config file, the web application will restart. I hope this helps people to NOT write code!   Steve WellensCodeProject

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  • So long and thanks for the fish&hellip;

    - by Geoff N. Hiten
    This marks my last post as a SQLPASS Board member.  I learned a lot during my year of service and I thank everyone involved for this opportunity.  I would especially like to thank the Chapter leaders and Regional Mentors for Virtual Chapters who (mostly) patiently taught me about Virtual Chapters.   I hope the changes I put in place will help strengthen and grow VCs and PASS going forward.  I would also like to thank every one who encouraged me to reach beyond my comfort zone and accept a leadership position within the PASS organization.  My overall principle was to be a good steward of the PASS community.  Could I have done more?  Always. Did I do enough?  I hope so.  But PASS is a volunteer organization and my time, like yours, is limited.  I have other obligations in life that supersede PASS.  Now I have more time for some of those.  I won’t be going away or leaving the SQL Community.  I will still contribute to the community and support PASS, just in a different role.  Time to let somebody else enjoy the hot seat for a while. Finally, everyone who voted (not just for me) deserves a thanks.  More voters and more engaged voters, strong candidates, and a vigorous debate were all I wanted out of declaring as a candidate last year. This year the SQL community got exactly that. Thank you..

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  • iiR Hospital Digital 2011: Tras la historia digital ¿qué?

    - by Eloy M. Rodríguez
    Como el acceso a la documentación está restringido, sólo voy a comentar por encima algunos temas o planteamientos que me han llamado la atención del VI Foro Hospital Digital 2011, organizado por iiR. Y comienzo destacando la buena moderación de Maribel Grau del Hospital Clínic de Barcelona que estuvo sobria, eficaz y motivadora del debate. Me impresionó el proyecto Hospital Líquido del Hospital San Joan de Deu de Barcelona por el compromiso corporativo con una medicina colaborativa involucrando a los pacientes y a los profesionales, con unas iniciativas de eSalud y Salud2.0 avanzadas y apoyadas en un buen soporte legal, tecnológico, de los profesionales y con procesos bien definidos. Es un tema corporativo y no una prueba, como bien explicó Jorge Juan Fernández y detalló después Júlia Cutillas, cuyo rol, por cierto, es de Community Manager. En el debate salió el tema del retorno de la inversión y ese es un tema inmaduro, ya que es difícil de encontrar métricas adecuadas, pero no dudan de su continuidad ya que forma parte de una estrategia corporativa, en la que siempre hay elementos que forman parte de los costes generales y que se consideran necesarios para prestar el nivel de servicio que se desea ofrecer. Cecilia Pérez desde su posición como Jefe de Implantación de HCE en el Hospital de Móstoles hizo énfasis en la importancia de la gestión efectiva del cambio cuando se implanta un sistema de historia clínica electrónica que pasa por una inicial negación de los usarios al cambio, que luego presentan una resistencia al prinicipio para luego empezar a explorar posibilidades y llegar a un compromiso con el cambio. Santiago Borrás, Jefe de Sistemas del Hospital del Henares, partió de un hospital digital, pero eso no es más que el comienzo. Tras tres años la frustración de los profesionales es no perderse entre demasiada información. La etapa necesaria tras la digitalición es la generación y compartición del cononocimiento. Cristina Ibarrola, Directora de Atención Primaria del SNS-O comentó la experiencia de las interconsultas primaria-especializada que reducen la carga asistencial en primaria al aumentar la resolución. Hay una reserva de tiempos específicos en las agendas de los profesionales de ambos lados para garantizar una respuesta en un máximo de 48 horas. Eso ha llevado a una flexibiliazación de la agenda de los médicos de primaria que tienen un 25% más de tiempo para las consultas presenciales. Parece que aquí la opción tomada es dar más tiempo por paciente en vez de más pacientes, supongo que en parte porque la presión asistencial en Navarra tengo entendido que no es tan fuerte como en otras zonas. Alejandra Cubero comentó la experiencia de identificación de pacientes y de inteoperabilidad en Hospitales de Madrid. Ana Rosa Pulido presentó los logros del SES y su proyecto actual de Imagen Médica No Radiológica. Richard Bernat explicó la experiencia de HCE de Salud de la Mujer Dexeus, indicando que si bien no hay métricas del retorno de la inversión, sí hay una percepción del valor por las diferentes direcciones. Arturo Quesada glosó la experiencia de Jimena en el Hospital de Ávila, Joan Chafer desgranó el arduo proceso de introducción de sucesivas soluciones digitales en el Hospital Clínico San Carlos de Madrid comenzando por “Hogar Digital”, todo ello con financiación externa o recursos propios y cerró el turno de intervenciones no comerciales Pedro A. Bonal que presentó el valor de los eDocs dentro del Complejo (aplicado en sus dos acepciones de conjunto y complicado) Hospitalario de Toledo como tránsito a la HCE plenamente digital. Tweet

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  • Pet Store Loyalty Programs: I'm Not Loyal Yet!

    - by ruth.donohue
    After two years of constantly being asked (aka "pestered) by my now eight-year-old daughter for a dog (or any pet that is more interactive than a goldfish), I've finally compromised with a hamster purely by chance. Friends of ours had recently brought home a female hamster, and (surprise, surprise) two weeks later, they were looking for homes for 11 baby hamster pups. Since the pups were not yet ready to be weaned from their mother, my daughter and I had several weeks to get ready -- and we spent that extra time visiting a number of local pet stores and purchasing an assortment of hamster books, toys, exercise equipment, food, bedding, and cage -- not cheap! Now, I'm usually an online shopper (i.e. I love reading user reviews and comparing prices), but for kids, there is absolutely no online substitute for actually walking into a store and physically picking out something you want. We have two competing pet shops within close proximity to where we live, and I signed up for their rewards programs to get discounts on select items. I'm sure it takes a while to get my data into the system (after all, I did fill out a form the old-fashioned way), but as it has been more than two weeks for one store and over a week for the other, the window of opportunity is getting smaller as we by now pretty much have most of what we think we need. Everything I've purchased has been purely hamster or small animal related, so in an ideal world, the stores would have me easily figured out as a hamster owner. Here is what I would be expecting of a loyalty rewards program: Point me to some useful links, either information provied by the company or external websites where I can learn more. Any value-add a business can provide to make my life easier makes me a much more loyal customer. What things can I expect as a new pet owner? Any hamster communities? Any hamster-related events? Any vets that specialize in small animals in the vicinity? Send me an email with other related products I may be interested in. Upsell and cross-sell to me. We've go the basics and a couple of luxuries, but at this point, I'm pretty excited (surprisingly) about the hamster, and my daughter is footing the bill with her birthday and Christmas money. She and I would be more than happy to spend her money! Get this information to me faster. As I mentioned, my window of opportunity is getting smaller, as eithe rmy daughter's money will run out on other things or we'll start losing the thrill of buying new hamster toys and treats. I realize this is easier said than done, and undoubtedly, the stores are getting value knowing my basic customer information and purchase history. Buth, they could really benefit by delivering a loyalty program that really earned my loyalty. "Goldeen" needs a new water bottle, yogurt chips, and chew toys as he doesn't seem to like the ones we bought. So for now, I'll just go to whichever store is the most convenient. Oh, and just for fun (not related to this post), here are a couple of videos my daughter really got a kick out of watching: Hamster on a Piano Tic in a Spin-Dryer

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  • Making Money from your SQL Server Blog

    - by Bill Graziano
    My SQL Server blog reading list is around one hundred blogs.  Many people are writing great content and generating lots of page views.  I see some of them running Google AdSense and trying to make a little money off their traffic.  If you want to earn some some extra money from what you’ve written there are a couple of options.  And one new option that I’m announcing here. Background Internet advertising is sold based on a few different pricing schemes.  Flat Fee.  You offer either all your impressions (page views) or some percentage of your impressions in exchange for a flat monthly fee.  CPM or cost per thousand impressions.  If the quoted price is $2 CPM you’ll get $2 for every 1,000 times the ad is displayed.  While you might think the “M” means millions, the “M” in CPM is the roman numeral for 1,000. CPC or cost per click.  This is also called PPC or pay per click.  In this method you get paid based on how many clicks there are on the ad.  CPA or cost per action.  In this method you get paid based on an action that occurs on the advertisers site after they click on the ad.  This is typically some type of sign up form.  This is how most affiliate programs work. Darren Rowse at ProBlogger has been writing about blogging and making money off blogs for years.  He has a good introduction to making money on your blog in his “Making Money” section.  If you’re interested in learning more he has a post up titled How to Make More Money From Your Blog in the New Year that links to many of his best posts on the subject. Google AdSense This is the most common method for people earning money from their blogging.  It’s easy to setup and administer.  You tell AdSense what size ads you’d like to run and it gives you a little piece of JavaScript to put on your site.  AdSense quickly learns the topics you write about and displays ads that are appropriate for your site.  I typically see ads for hosting, SQL Server tools and developer tools running in AdSense slots.  AdSense pays on a CPC model.  If you translate that back to CPM pricing you’ll see rates from $0.50 to $1.00 CPM. Amazon While you might not make much money writing books it’s now possible to make even less helping Amazon sell them.  You can sign up for an Amazon affiliate program.  Each time you send Amazon a link and someone buys the book you get a cut of that sale.  This is the CPA model from above.  Amazon can help you build some pretty nice “stores”.  Here’s the SQL Server bookstore I built for SQLTeam.com.  If you’re just putting in a page with books like I’ve done on SQLTeam you should keep your expectations low.  If you’re writing book reviews of suggesting books on your blog it really does make sense to setup an Amazon affiliate link.  People are much more likely to buy a book based on a review from a trusted source.  I always try to buy through a referral link if there is one. Amazon pays about 4% of the price as a referral fee.  You also get credit for anything else they buy while on the site.  I recently had someone buy an iPod nano with their SQL Server book making me an extra $5.60 richer!  Estimating how much you can make is difficult though.  How much attention you draw to the links and book reviews can dramatically affect the earnings. Private Ad Sales This is the hardest but potentially most lucrative option.  You sell advertising directly to companies that want to sell things to your readers.  Typically this would be SQL Server tool vendors, hosting companies or anyone else that wants to make money off database administrators.  This is also the most difficult to do.  You’ll need the contacts at the companies and enough page views to make it worth their while.  You’ll also need software to track the page views and clicks, geo-target your ads and smooth out the impressions.  Your earnings are based on whatever you can negotiate with the companies. SQL Server Ad Network For the last couple of years I’ve run any extra ads that I sold on the SQLTeam Weblogs.  You can see an example of that on Mladen’s blog.  The ad in the upper right corner is one that I’m running for him.  (Note: Many of the ads I’m running are geo-targeted to only appear in English speaking countries.  You may see a different set of ads outside the US, Canada and the UK.  You can also see he has a couple of Google ads on his blog.)  When I run ads on his blog I split the advertising revenue with him.  They make a little and I make a little. I recently started to expand this and sell advertising specifically to run on SQL Server-related blogs.  I’m also starting to run ads on non-SQLTeam blogs.  The only way I can sell more advertising is to have more blogs to run it on.  And that’s where you come in. I’ve created a SQL Server advertising network.  I handle all the ad sales and provide the technology to serve the ads.  I handle collections and payments back to you.  You get paid at the end of each month regardless of when (or if) the advertiser actually pays.  All you need to do is add a small piece of JavaScript to your site to display the ads. If you’re writing about SQL Server and interested in earning a little money for your site I’d like to talk to you.  You can use the Contact Us page on SQLTeam.com to reach me.  Running advertising on your blog isn’t for everyone.  If you’re concerned about what advertisers might think about certain posts then you might not be a good fit.  For the most part this isn’t an issue.  You’ll also need to have a PayPal account to receive payments.  You probably won’t get rich doing this.  But you can earn extra cash on the side for doing what you would do anyway.  I do know that people have earned enough to buy themselves a nice laptop doing this. My initial target is blogs with more than 10,000 page views per month.  I expect to pay two to three times what Google pays.  If you have less than 10,000 page views per month but are still interested I’d still like to hear from you.  I may not be able to sign up smaller blogs right away but we’ll get the process started.  If you’re unsure about your traffic Google Analytics is a free tool that provides great reporting on traffic, popular posts and how people find your blog.  If you have any questions or are just curious drop me a line and I’ll try to answer your questions.

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  • AxCMS.net 10 with Microsoft Silverlight 4 and Microsoft Visual Studio 2010

    - by Axinom
    Axinom, European WCM vendor, today announced the next version of its WCM solution AxCMS.net 10, which streamlines the processes involved in creating, managing and distributing corporate content on the internet. The new solution helps reducing ongoing costs for managing and distributing to large audiences, while at the same time drastically reducing time-to-market and one-time setup costs. http://www.AxCMS.net Axinom’s WCM portfolio, based on the Microsoft .NET Framework 4, Microsoft Visual Studio 2010 and Microsoft Silverlight 4, allows enterprises to increase process efficiency, reduce operating costs and more effectively manage delivery of rich media assets on the Web and mobile devices. Axinom solutions are widely used by major European online brands in IT, telco, retail, media and entertainment industries such as Siemens, American Express, Microsoft Corp., ZDF, Pro7Sat1 Media, and Deutsche Post. Brand New User Interface built with Silverlight 4By using Silverlight 4, Axinom’s team created a new user interface for AxCMS.net 10 that is optimized for improved usability and speed. WYSIWYG mode, integrated image editor, extended list views, and detail views of objects allow a substantial acceleration of typical editor tasks. Axinom’s team worked with Silverlight Rough Cut Editor for video management and Silverlight Analytics Framework for extended reporting to complete the wide range of capabilities included in the new release. “Axinom’s release of AxCMS.net 10 enables developers to take advantage of the latest features in Silverlight 4,” said Brian Goldfarb, director of the developer platform group at Microsoft Corp. “Microsoft is excited about the opportunity this creates for Web developers to streamline the creating, managing and distributing of online corporate content using AxCMS.net 10 and Silverlight.” Rapid Web Development with Visual Studio 2010AxCMS.net 10 is extended by additional products that enable developers to get productive quickly and help solve typical customer scenarios. AxCMS.net template projects come with documented source code that help kick-start projects and learn best practices in all aspects of Web application development. AxCMS.net overcomes many hard-to-solve technical obstacles in an out-of-the-box manner by providing a set of ready-to-use vertical solutions such as corporate Web site, Web shop, Web campaign management, email marketing, multi-channel distribution, management of rich Internet applications, and Web business intelligence. Extended Multi-Site ManagementAxCMS.net has been supporting the management of an unlimited number of Web sites for a long time. The new version 10 of AxCMS.net will further improve multi-site management and provide features to editors and developers that will simplify and accelerate multi-site and multi-language management. Extended publication workflow will take into account additional dependencies of dynamic objects, pages, and documents. “The customer requests evolved from static html pages to dynamic Web applications content with the emergence of rich media assets seamlessly combined across many channels including Web, mobile and IPTV. With the.NET Framework 4 and Silverlight 4, we’re on the fast track to making the three screen strategy a reality for our customers,” said Damir Tomicic, CEO of Axinom Group. “Our customers enjoy substantial competitive advantages of using latest Microsoft technologies. We have a long-standing, relationship with Microsoft and are committed to continued development using Microsoft tools and technologies to deliver innovative Web solutions in the future.”  

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  • Essbase 11.1.2 - JVM_OPTION settings for Essbase

    - by sujata
    When tuning the heap size for Essbase, there are two JVM_OPTIONS settings available for Essbase - one for the Essbase agent and one for the Essbase applications that are using custom-defined functions (CDFs), custom-defined macros (CDMs), data mining, triggers or external authentication. ESS_JVM_OPTION setting is used for the application and mainly for CDFs, CDMs, data mining, triggers, external authentication ESS_CSS_JVM_OPTION setting is used to set the heap size for the Essbase agent

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  • Big Data – Buzz Words: Importance of Relational Database in Big Data World – Day 9 of 21

    - by Pinal Dave
    In yesterday’s blog post we learned what is HDFS. In this article we will take a quick look at the importance of the Relational Database in Big Data world. A Big Question? Here are a few questions I often received since the beginning of the Big Data Series - Does the relational database have no space in the story of the Big Data? Does relational database is no longer relevant as Big Data is evolving? Is relational database not capable to handle Big Data? Is it true that one no longer has to learn about relational data if Big Data is the final destination? Well, every single time when I hear that one person wants to learn about Big Data and is no longer interested in learning about relational database, I find it as a bit far stretched. I am not here to give ambiguous answers of It Depends. I am personally very clear that one who is aspiring to become Big Data Scientist or Big Data Expert they should learn about relational database. NoSQL Movement The reason for the NoSQL Movement in recent time was because of the two important advantages of the NoSQL databases. Performance Flexible Schema In personal experience I have found that when I use NoSQL I have found both of the above listed advantages when I use NoSQL database. There are instances when I found relational database too much restrictive when my data is unstructured as well as they have in the datatype which my Relational Database does not support. It is the same case when I have found that NoSQL solution performing much better than relational databases. I must say that I am a big fan of NoSQL solutions in the recent times but I have also seen occasions and situations where relational database is still perfect fit even though the database is growing increasingly as well have all the symptoms of the big data. Situations in Relational Database Outperforms Adhoc reporting is the one of the most common scenarios where NoSQL is does not have optimal solution. For example reporting queries often needs to aggregate based on the columns which are not indexed as well are built while the report is running, in this kind of scenario NoSQL databases (document database stores, distributed key value stores) database often does not perform well. In the case of the ad-hoc reporting I have often found it is much easier to work with relational databases. SQL is the most popular computer language of all the time. I have been using it for almost over 10 years and I feel that I will be using it for a long time in future. There are plenty of the tools, connectors and awareness of the SQL language in the industry. Pretty much every programming language has a written drivers for the SQL language and most of the developers have learned this language during their school/college time. In many cases, writing query based on SQL is much easier than writing queries in NoSQL supported languages. I believe this is the current situation but in the future this situation can reverse when No SQL query languages are equally popular. ACID (Atomicity Consistency Isolation Durability) – Not all the NoSQL solutions offers ACID compliant language. There are always situations (for example banking transactions, eCommerce shopping carts etc.) where if there is no ACID the operations can be invalid as well database integrity can be at risk. Even though the data volume indeed qualify as a Big Data there are always operations in the application which absolutely needs ACID compliance matured language. The Mixed Bag I have often heard argument that all the big social media sites now a days have moved away from Relational Database. Actually this is not entirely true. While researching about Big Data and Relational Database, I have found that many of the popular social media sites uses Big Data solutions along with Relational Database. Many are using relational databases to deliver the results to end user on the run time and many still uses a relational database as their major backbone. Here are a few examples: Facebook uses MySQL to display the timeline. (Reference Link) Twitter uses MySQL. (Reference Link) Tumblr uses Sharded MySQL (Reference Link) Wikipedia uses MySQL for data storage. (Reference Link) There are many for prominent organizations which are running large scale applications uses relational database along with various Big Data frameworks to satisfy their various business needs. Summary I believe that RDBMS is like a vanilla ice cream. Everybody loves it and everybody has it. NoSQL and other solutions are like chocolate ice cream or custom ice cream – there is a huge base which loves them and wants them but not every ice cream maker can make it just right  for everyone’s taste. No matter how fancy an ice cream store is there is always plain vanilla ice cream available there. Just like the same, there are always cases and situations in the Big Data’s story where traditional relational database is the part of the whole story. In the real world scenarios there will be always the case when there will be need of the relational database concepts and its ideology. It is extremely important to accept relational database as one of the key components of the Big Data instead of treating it as a substandard technology. Ray of Hope – NewSQL In this module we discussed that there are places where we need ACID compliance from our Big Data application and NoSQL will not support that out of box. There is a new termed coined for the application/tool which supports most of the properties of the traditional RDBMS and supports Big Data infrastructure – NewSQL. Tomorrow In tomorrow’s blog post we will discuss about NewSQL. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: Big Data, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL

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  • Step Aside Google

    - by David Dorf
    Step aside Google. While search will always be a huge part of the web, I can see a day in the not-too-distance future where search takes a backseat to the social graph. Links between pages will give way to relationships between people, including context like location. What does this mean for retail? It means your e-commerce strategy will slowly transition to an f-commerce strategy. Remember when a large portion of the online population was held captive inside the walls of AOL? All the commercials listed an AOL keyword, not a web address because that's where the majority of people surfed. Now, people are spending a huge amount of time in Facebook (despite Betty White's proclamation that its a big waste of time). According to Facebook, users spend 500 billion minutes per month on the site. Selling products where consumers are spending their time makes sense. The power of Like and Share are the most effective approach to marketing. More and more stores are popping up on Facebook, and soon they will be the front-end to e-commerce systems. As sites adopt the Facebook Open Graph API, users will have a harder time distinguishing the open web from their Facebook experience, including shopping. Of course e-commerce sites won't go away, but a large portion of their traffic will emanate from Facebook and in some cases Facebook will act as the front-end for the web store. Ignore Facebook Open Graph at your peril. In a Mashable article, Mitchell Harper made several predictions about how e-commerce will change based on Facebook. His five points are not far-fetched at all, so we need to watch this space carefully.

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  • In JavaScript, curly brace placement matters: An example by David

    I used to follow Kernighan and Ritchie style of code formatting, but lost that habit. Not sure how may hours spent on fixing JS issues due to Allman format. Every time I feel bad whilst Visual Studio gives K&R style. Just realized the impotence of K&R style for JS. My Big thanks to David for pointing the curly brace placement issue with JS and posting such a nice article. In JavaScript, curly brace placement matters: An example span.fullpost {display:none;}

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  • User Lockout & WLST

    - by Bala Kothandaraman
    WebLogic server provides an option to lockout users to protect accounts password guessing attack. It is implemented with a realm-wide Lockout Manager. This feature can be used with custom authentication provider also. But if you implement your own authentication provider and wish to implement your own lockout manager that is possible too. If your domain is configured to use the user lockout manager the following WLST script will help you to: - check whether a user is locked using a WLST script - find out the number of locked users in the realm #Define constants url='t3://localhost:7001' username='weblogic' password='weblogic' checkuser='test-deployer' #Connect connect(username,password,url) #Get Lockout Manager Runtime serverRuntime() dr = cmo.getServerSecurityRuntime().getDefaultRealmRuntime() ulmr = dr.getUserLockoutManagerRuntime() print '-------------------------------------------' #Check whether a user is locked if (ulmr.isLockedOut(checkuser) == 0): islocked = 'NOT locked' else: islocked = 'locked' print 'User ' + checkuser + ' is ' + islocked #Print number of locked users print 'No. of locked user - ', Integer(ulmr.getUserLockoutTotalCount()) print '-------------------------------------------' print '' #Disconnect & Exit disconnect() exit()

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  • The C++ Standard Template Library as a BDB Database (part 1)

    - by Gregory Burd
    If you've used C++ you undoubtedly have used the Standard Template Libraries. Designed for in-memory management of data and collections of data this is a core aspect of all C++ programs. Berkeley DB is a database library with a variety of APIs designed to ease development, one of those APIs extends and makes use of the STL for persistent, transactional data storage. dbstl is an STL standard compatible API for Berkeley DB. You can make use of Berkeley DB via this API as if you are using C++ STL classes, and still make full use of Berkeley DB features. Being an STL library backed by a database, there are some important and useful features that dbstl can provide, while the C++ STL library can't. The following are a few typical use cases to use the dbstl extensions to the C++ STL for data storage. When data exceeds available physical memory.Berkeley DB dbstl can vastly improve performance when managing a dataset which is larger than available memory. Performance suffers when the data can't reside in memory because the OS is forced to use virtual memory and swap pages of memory to disk. Switching to BDB's dbstl improves performance while allowing you to keep using STL containers. When you need concurrent access to C++ STL containers.Few existing C++ STL implementations support concurrent access (create/read/update/delete) within a container, at best you'll find support for accessing different containers of the same type concurrently. With the Berkeley DB dbstl implementation you can concurrently access your data from multiple threads or processes with confidence in the outcome. When your objects are your database.You want to have object persistence in your application, and store objects in a database, and use the objects across different runs of your application without having to translate them to/from SQL. The dbstl is capable of storing complicated objects, even those not located on a continous chunk of memory space, directly to disk without any unnecessary overhead. These are a few reasons why you should consider using Berkeley DB's C++ STL support for your embedded database application. In the next few blog posts I'll show you a few examples of this approach, it's easy to use and easy to learn.

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  • Introducción a ENUM (E.164 Number Mapping)

    - by raul.goycoolea
    E.164 Number Mapping (ENUM o Enum) se diseñó para resolver la cuestión de como se pueden encontrar servicios de internet mediante un número telefónico, es decir cómo se pueden usar los los teléfonos, que solamente tienen 12 teclas, para acceder a servicios de Internet. La parte más básica de ENUM es por tanto la convergencia de las redes del STDP y la IP; ENUM hace que pueda haber una correspondencia entre un número telefónico y un identificador de Internet. En síntesis, Enum es un conjunto de protocolos para convertir números E.164 en URIs, y viceversa, de modo que el sistema de numeración E.164 tenga una función de correspondencia con las direcciones URI en Internet. Esta función es necesaria porque un número telefónico no tiene sentido en el mundo IP, ni una dirección IP tiene sentido en las redes telefónicas. Así, mediante esta técnica, las comunicaciones cuyo destino se marque con un número E.164, puedan terminar en el identificador correcto (número E.164 si termina en el STDP, o URI si termina en redes IP). La solución técnica de mirar en una base de datos cual es el identificador de destino tiene consecuencias muy interesantes, como que la llamada se pueda terminar donde desee el abonado llamado. Esta es una de las características que ofrece ENUM : el destino concreto, el terminal o terminales de terminación, no lo decide quien inicia la llamada o envía el mensaje sino la persona que es llamada o recibe el mensaje, que ha escrito sus preferencias en una base de datos. En otras palabras, el destinatario de la llamada decide cómo quiere ser contactado, tanto si lo que se le comunica es un email, o un sms, o telefax, o una llamada de voz. Cuando alguien quiera llamarle a usted, lo que tiene que hacer el llamante es seleccionar su nombre (el del llamado) en la libreta de direcciones del terminal o marcar su número ENUM. Una aplicación informática obtendrá de una base de datos los datos de contacto y disponibilidad que usted decidió. Y el mensaje le será remitido tal como usted especificó en dicha base de datos. Esto es algo nuevo que permite que usted, como persona llamada, defina sus preferencias de terminación para cualquier tipo de contenido. Por ejemplo, usted puede querer que todos los emails le sean enviados como sms o que los mensajes de voz se le remitan como emails; las comunicaciones ya no dependen de donde esté usted o deque tipo de terminal utiliza (teléfono, pda, internet). Además, con ENUM usted puede gestionar la portabilidad de sus números fijos y móviles. ENUM emplea una técnica de búsqueda indirecta en una base de datos que tiene los registros NAPTR ("Naming Authority Pointer Resource Records" tal como lo define el RFC 2915), y que utiliza el número telefónico Enum como clave de búsqueda, para obtener qué URIs corresponden a cada número telefónico. La base de datos que almacena estos registros es del tipo DNS.Si bien en uno de sus diversos usos sirve para facilitar las llamadas de usuarios de VoIP entre redes tradicionales del STDP y redes IP, debe tenerse en cuenta que ENUM no es una función de VoIP sino que es un mecanismo de conversión entre números/identificadores. Por tanto no debe ser confundido con el uso normal de enrutar las llamadas de VoIP mediante los protocolos SIP y H.323. ENUM puede ser muy útil para aquellas organizaciones que quieran tener normalizada la manera en que las aplicaciones acceden a los datos de comunicación de cada usuario. FundamentosPara que la convergencia entre el Sistema Telefónico Disponible al Público (STDP) y la Telefonía por Internet o Voz sobre IP (VoIP) y que el desarrollo de nuevos servicios multimedia tengan menos obstáculos, es fundamental que los usuarios puedan realizar sus llamadas tal como están acostumbrados a hacerlo, marcando números. Para eso, es preciso que haya un sistema universal de correspondencia de número a direcciones IP (y viceversa) y que las diferentes redes se puedan interconectar. Hay varias fórmulas que permiten que un número telefónico sirva para establecer comunicación con múltiples servicios. Una de estas fórmulas es el Electronic Number Mapping System ENUM, normalizado por el grupo de tareas especiales de ingeniería en Internet (IETF, Internet engineering task force), del que trata este artículo, que emplea la numeración E.164, los protocolos y la infraestructura telefónica para acceder indirectamente a diferentes servicios. Por tanto, se accede a un servicio mediante un identificador numérico universal: un número telefónico tradicional. ENUM permite comunicar las direcciones del mundo IP con las del mundo telefónico, y viceversa, sin problemas. Antes de entrar en mayores profundidades, conviene dar una breve pincelada para aclarar cómo se organiza la correspondencia entre números o URI. Para ello imaginemos una llamada que se inicia desde el servicio telefónico tradicional con destino a un número Enum. En ENUM Público, el abonado o usuario Enum a quien va destinada lallamada, habrá decidido incluir en la base de datos Enum uno o varios URI o números E.164, que forman una lista con sus preferencias para terminar la llamada. Y el sistema como se explica más adelante, elegirá cual es el número o URI adecuado para dicha terminación. Por tanto como resultado de la consulta a la base dedatos Enum siempre se da una relación unívoca entre el número Enum marcado y el de terminación, conforme a los deseos de la persona llamada.Variedades de ENUMUna posible fuente de confusión cuando se trata sobre ENUM es la variedad de soluciones o sistemas que emplean este calificativo. Lo habitual es que cuando se haga una referencia a ENUM se trate de uno de los siguientes casos: ENUM Público: Es la visión original de ENUM, como base de datos pública, parecida a un directorio, donde el abonado "opta" a ser incluido en la base de datos, que está gestionada en el dominio e164.arpa, delegando a cada país la gestión de la base de datos y la numeración. También se conoce como ENUM de usuario. Carrier ENUM, o ENUM Infraestructura, o de Operador: Cuando grupos de operadores proveedores de servicios de comunicaciones electrónicas acuerdan compartir la información de los abonados por medio de ENUM mediante acuerdos privados. En este caso son los operadores quienes controlan la información del abonado en vez de hacerlo (optar) los propios abonados. Carrier ENUM o ENUM de Operador también se conoce como Infrastructure ENUM o ENUM Infraestructura, y está siendo normalizado por IETF para la interconexión de VoIP (mediante acuerdos de peering). Como se explicará en la correspondiente sección, también se puede utilizar para la portabilidad o conservación de número. ENUM Privado: Un operador de telefonía o de VoIP, o un ISP, o un gran usuario, puede utilizar las técnicas de ENUM en sus redes y en las de sus clientes sin emplear DNS públicos, con DNS privados o internos. Resulta fácil imaginar como puede utilizarse esta técnica para que compañías multinacionales, o bancos, o agencias de viajes, tengan planes de numeración muy coherentes y eficaces. Cómo funciona ENUMPara conocer cómo funciona Enum, le remitimos a la página correspondiente a ENUM Público, puesto que esa variedad de Enum es la típica, la que dió lugar a todos los procedimientos y normas de IETF .Más detalles sobre: @page { margin: 0.79in } P { margin-bottom: 0.08in } H4 { margin-bottom: 0.08in } H4.ctl { font-family: "Lohit Hindi" } A:link { so-language: zxx } -- ENUM Público. En esta página se explica con cierto detalle como funciona Enum Carrier ENUM o ENUM de Operador ENUM Privado Normas técnicas: RFC 2915: NAPTR RR. The Naming Authority Pointer (NAPTR) DNS Resource Record RFC 3761: ENUM Protocol. The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM). (obsoletes RFC 2916). RFC 3762: Usage of H323 addresses in ENUM Protocol RFC 3764: Usage of SIP addresses in ENUM Protocol RFC 3824: Using E.164 numbers with SIP RFC 4769: IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling Information RFC 3026: Berlin Liaison Statement RFC 3953: Telephone Number Mapping (ENUM) Service Registration for Presence Services RFC 2870: Root Name Server Operational Requirements RFC 3482: Number Portability in the Global Switched Telephone Network (GSTN): An Overview RFC 2168: Resolution of Uniform Resource Identifiers using the Domain Name System Organizaciones relacionadas con ENUM RIPE - Adimistrador del nivel 0 de ENUM e164.arpa. ITU-T TSB - Unión Internacional de Telecomunicaciones ETSI - European Telecommunications Standards Institute VisionNG - Administrador del rango ENUM 878-10 IETF ENUM Chapter

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  • Where Next for Google Translate? And What of Information Quality?

    - by ultan o'broin
    Fascinating article in the UK Guardian newspaper called Can Google break the computer language barrier? In it, Andreas Zollman, who works on Google Translate, comments that the quality of Google Translate's output relative to the amount of data required to create that output is clearly now falling foul of the law of diminishing returns. He says: "Each doubling of the amount of translated data input led to about a 0.5% improvement in the quality of the output," he suggests, but the doublings are not infinite. "We are now at this limit where there isn't that much more data in the world that we can use," he admits. "So now it is much more important again to add on different approaches and rules-based models." The Translation Guy has a further discussion on this, called Google Translate is Finished. He says: "And there aren't that many doublings left, if any. I can't say how much text Google has assimilated into their machine translation databases, but it's been reported that they have scanned about 11% of all printed content ever published. So double that, and double it again, and once more, shoveling all that into the translation hopper, and pretty soon you get the sum of all human knowledge, which means a whopping 1.5% improvement in the quality of the engines when everything has been analyzed. That's what we've got to look forward to, at best, since Google spiders regularly surf the Web, which in its vastness dwarfs all previously published content. So to all intents and purposes, the statistical machine translation tools of Google are done. Outstanding job, Googlers. Thanks." Surprisingly, all this analysis hasn't raised that much comment from the fans of machine translation, or its detractors either for that matter. Perhaps, it's the season of goodwill? What is clear to me, however, of course is that Google Translate isn't really finished (in any sense of the word). I am sure Google will investigate and come up with new rule-based translation models to enhance what they have already and that will also scale effectively where others didn't. So too, will they harness human input, which really is the way to go to train MT in the quality direction. But that aside, what does it say about the quality of the data that is being used for statistical machine translation in the first place? From the Guardian article it's clear that a huge humanly translated corpus drove the gains for Google Translate and now what's left is the dregs of badly translated and poorly created source materials that just can't deliver quality translations. There's a message about information quality there, surely. In the enterprise applications space, where we have some control over content this whole debate reinforces the relationship between information quality at source and translation efficiency, regardless of the technology used to do the translation. But as more automation comes to the fore, that information quality is even more critical if you want anything approaching a scalable solution. This is important for user experience professionals. Issues like user generated content translation, multilingual personalization, and scalable language quality are central to a superior global UX; it's a competitive issue we cannot ignore.

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  • Throw Things at Me…In Person!

    - by Most Valuable Yak (Rob Volk)
    I have a few speaking engagements coming up in July.  I will be getting my Revenge on twice this week, first at the Steel City SQL User Group in Birmingham, Alabama July 17, 2012: New Horizon Computer Learning Center 601 Beacon Pkwy. West, Suite 106 Birmingham, AL 35209 Register: http://steelcitysqljul2012.eventbrite.com/ 6-8 pm CST Not content with that, with my hands behind my back, I will pull the same thing from my hat at SQL Saturday 122 in Louisville, KY on July 21, 2012: Schedule Register These include Revenge: The SQL Parts 1 AND 2!  New and improved with the new Office 2013 Preview!  (Ummm, not really). I will then Tame Unruly Data at SQL Saturday 126 in Indianapolis, IN in July 28, 2012: Schedule Register If you will be in any of those places at those times, and I owe you money, that would be the best time for you to collect.  Just make sure not to warn me first, otherwise I may not show.

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  • SQL Server DATA Tools CTP4 Released!

    - by hassanfadili
    SQL Server team has released the new SQL Server Data Tools CTP4. Congratulations and Thanks to Gert Drapers and his team with this great milestone. To lear more about this SSDT CTP4 Release, check: What’s new in SQL Server Data Tools CTP4?http://blogs.msdn.com/b/ssdt/archive/2011/11/21/what-s-new-in-sql-server-data-tools-ctp4.aspxSQL Server Data Tools CTP4 vs. VS2010 Database Projectshttp://blogs.msdn.com/b/ssdt/archive/2011/11/21/sql-server-data-tools-ctp4-vs-vs2010-database-projects.aspxTop VSDB->SSDT Project Conversion Issueshttp://blogs.msdn.com/b/ssdt/archive/2011/11/21/top-vsdb-gt-ssdt-project-conversion issues.aspxUninstalling SQL Server Developer Tools CTP3 (Code-named “Juneau”) http://blogs.msdn.com/b/ssdt/archive/2011/11/21/uninstalling-ssdt-ctp3-code-named-juneau.aspxThis actually points to a nifty PowerShell script to help you uninstall.Have Fun.v

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  • Java Spotlight Episode 75: Greg Luck on JSR 107 Java Temporary Caching API

    - by Roger Brinkley
    Tweet Recorded live at Jfokus 2012, an interview with Greg Luck on JSR 107 Java Temporary Caching API. Joining us this week on the Java All Star Developer Panel is Alexis Moussine-Pouchkine, Java EE Developer Advocate. Right-click or Control-click to download this MP3 file. You can also subscribe to the Java Spotlight Podcast Feed to get the latest podcast automatically. If you use iTunes you can open iTunes and subscribe with this link:  Java Spotlight Podcast in iTunes. Show Notes News JavaOne 2012 call for papers is open (closes April 9th) LightFish, Adam Bien's lightweight telemetry application Java EE 6 sample code JavaFX 1.2 and 1.3 EOL Repeating Annotations in the Works Events March 26-29, EclipseCon, Reston, USA March 27, Virtual Developer Days - Java (Asia Pacific (English)),9:30 am to 2:00pm IST / 12:00pm to 4.30pm SGT  / 3.00pm - 7.30pm AEDT April 4-5, JavaOne Japan, Tokyo, Japan April 12, GreenJUG, Greenville, SC April 17-18, JavaOne Russia, Moscow Russia April 18–20, Devoxx France, Paris, France April 26, Mix-IT, Lyon, France, May 3-4, JavaOne India, Hyderabad, India Feature Interview Greg Luck founded Ehcache in 2003. He regularly speaks at conferences, writes and codes. He has also founded and maintains the JPam and Spnego open source projects, which are security focused. Prior to joining Terracotta in 2009, Greg was Chief Architect at Wotif.com where he provided technical leadership as the company went from a single product startup to a billion dollar public company with multiple product lines. Before that Greg was a consultant for ThoughtWorks with engagements in the US and Australia in the travel, health care, geospatial, banking and insurance industries. Before doing programming, Greg managed IT. He was CIO at Virgin Blue, Tempo Services, Stamford Hotels and Resorts and Australian Resorts. He is a Chartered Accountant, and spent 7 years with KPMG in small business and insolvency. Mail Bag What’s Cool RT @harkje: To update an earlier tweet: #JavaFX feels like Swing with added convenience methods, better looking widgets, nice effects and...

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  • New Release: ImageGlue 7.0 .NET

    When it comes to manipulating images dynamically there are few toolkits that can compete with ImageGlue 6 in terms of versatility and performance. With extensive support for a huge range of graphic formats including JPEG2000, Very Large TIFF Support™, and fully multi-threaded processing, ImageGlue has proved a popular choice for use in ASP and ASP.NET server environments. Now ImageGlue 7 has arrived, introducing support for 64-bit systems, improved PostScript handling, and many other enhancements. We've also used the opportunity to revise the API, to make it more friendly and familiar to .NET coders. But don't worry about rewriting legacy code - you'll find the 'string parameter' interface is still available through the WebSupergoo.ImageGlue6 namespace. So what's new in ImageGlue 7.0? Support for 64-bit systems. ImageGlue now incorporates the PostScript rendering engine as used by ABCpdf, our PDF component, which has proven to be fast, robust and accurate. This greatly improves support for importing and exporting PS, EPS, and PDF files, and also enables you to make use of powerful PostScript drawing operations for drawing to canvas. Leveraging ABCpdf's powerful vector graphics import and export functionality also makes it possible to interoperate with XPS and MS Office documents. An improved API with new classes, methods and properties, more in keeping with normal .NET development. Plus of course the usual range of bug fixes and minor enhancements. span.fullpost {display:none;}

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  • Java EE talks at JAX Conf

    - by arungupta
    JAX Conf is starting in San Jose today and there are several talks on Java EE there. Java EE Wednesday and Thursday Java Persistence API 2.0 with Eclipse Link RESTful Services with Java EE Cast Study: Functional programming in Scala with CDI GlassFish 3.1: Deploying your Java EE 6 Applications The future of Java Enterprise Testing Forge new ground in Rapid Enterprise Development The Java EE 7 Platform: Developing for the Cloud (Keynote) Exploring Java EE 6 for the Enterprise Developer JBoss Day JSF Summit CDI Tutorial And many more ... Check out the complete schedule and see ya there!

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  • Java EE talks at JAX Conf

    - by arungupta
    JAX Conf is starting in San Jose today and there are several talks on Java EE there. Java EE Wednesday and Thursday Java Persistence API 2.0 with Eclipse Link RESTful Services with Java EE Cast Study: Functional programming in Scala with CDI GlassFish 3.1: Deploying your Java EE 6 Applications The future of Java Enterprise Testing Forge new ground in Rapid Enterprise Development The Java EE 7 Platform: Developing for the Cloud (Keynote) Exploring Java EE 6 for the Enterprise Developer JBoss Day JSF Summit CDI Tutorial And many more ... Check out the complete schedule and see ya there!

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  • Debugging Tips for Skinning

    - by Christian David Straub
    Another guest post by Jeanne Waldman.If you are developing a skin for your Fusion Application in JDeveloper you should know these tips.   1. Firebug is your friend 2. Uncompress the css style classes 3. CHECK_FILE_MODIFICATION so that you see your skinning changes right away 4. View the generated CSS File   1. Firebug is your friend Install Firebug (http://getfirebug.com/layout) into Firefox and use it to view your rendered jspx page in the browser. You can select the HTML dom nodes on your page and you can see the css styles applied to each dom node.   2. Uncompress the css style classes By default the styleclasses that are rendered are compressed. You may see style classes like class="x10" and class="x2e". But in your skin css file you have styleclasses like: af|inputText::content or af|panelBox::header   It is easier for you to develop a skin and debug a skin with Firebug if you see the uncompressed styleclasses. To do this, a. open web.xml b. add   <context-param>     <param-name>org.apache.myfaces.trinidad.DISABLE_CONTENT_COMPRESSION</param-name>     <param-value>true</param-value>   </context-param> c. save d. restart the server and re-run your page.   3. CHECK_FILE_MODIFICATION so that you see your skinning changes right away   For performance sake the ADF Faces framework does not check if you skin .css file has changed on every render. But this is exactly what you want to happen when you are developing or debugging a skin. You want your changes to get noticed right away, without restarting the server.   To do this, a. open web.xml b. add   <context-param>     <description>If this parameter is true, there will be an automatic check of the modification date of your JSPs, and saved state will be discarded when JSP's change. It will also automatically check if your skinning css files have changed without you having to restart the server. This makes development easier, but adds overhead. For this reason this parameter should be set to false when your application is deployed.</description>     <param-name>org.apache.myfaces.trinidad.CHECK_FILE_MODIFICATION</param-name>     <param-value>false</param-value>   </context-param> c. save d. restart the server and re-run your page. e. from then on, you can change your skin's .css file, save it and refresh your page and you should see the changes right away   4. View the generated CSS File   There are different ways to view the generated CSS File which is your skin's css file merged in with all the skins it extends and processed and generated to the filesystem and linked to your generated html page. One way is to view it with Firebug. The problem with this approach is you might see something that is a little different than the actual css file because Firebug may do some extra processing. I like to view the generated css file by: Right click on your page in the browser 

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